Wrench



April 19 1927.

3.11.. MCNERNEY WRENCH Y Filed oct. e; '1924 fit? Patented Apr. 19, 19277.

PATENT OFFICE.

BERNARD LYNN MGNERNEY, F MINNEAPOLIS, MINNESOTA.

WRENCH.

Application filed October 22, 1924. Serial No. 745,133.

i My invention relates to improvements in adjustable wrenches of the type having a j aw-carrying head equipped with a handle hinged there-on, the tilting of the handle` with respect to the head serving to open and close the jaws.

An object of the invention is to provide a wrench of the present nature having oppositely movable jaws and novel means for shifting the same, said'means being operated through the handle by which the tool is manipulated.

Another object is to supply a quickly adj ustable wrench of the instant type that is simple, durable, and relatively inexpensive in construction.

1"Vith the foregoing and other objects inview, which will appear Vin the following description, the invention resides in t-he novel combination and arrangement of parts and in the details of construction hereinafter described and claimed. j

.ln the drawings, Fig. 1 is a sideelevation of a wrench embodying my invention; Fig. 2 is a bottom edge view thereof: Fig. 8 is a front edge view of the same; Fig. t is a sectional view taken on the line 4-4 of Fig. 1; and Fig. 5 is a similar view taken on the line 5 5 of Fig. 2.

Referring to the drawing, it will be observed that my improvement includes a head A and a handle B, the former consisting of head members a', a2. The head member a comprises a shank and a right-angular jaw 11 reaching forwardly therefrom. Said shank 10 is recessed at its forward edge from one side edge to the otherto form a way 12. Extending transversely through the shank 10 at the rear and in parallelism with said way 12 is an elongated opening 18 that communicates with said way `12. The rear portion 102L ofthe shank 10 is reduced in thickness as compared with the thickness of the forward portion thereof. A -rack C is formed on said shank 10, the same including a rib 14. reaching forwardly from the rear wall of the opening 13, between the upright margins thereof, also teeth 15 formed on the front side of said rib. The head member a? consists of a shank 16 and a right-angular jaw 17 reaching forwardly therefrom. Said shankA 16,l complementing the way 12, slidably fits therein. Thus tted together the head members a', a2 slide one on the other in direction to bring the jaws 11, Y 17 together, or to separate the same.

V15 onV the shank 10.

Formed on the rear edgey of the shank 16 and reaching into the opening 13 is a rack, the same consisting of rearwardly extending teeth 18.

The handle B is bifurcated at its forward end to form branches 19, which straddle and lit snugly against the sides of the reduced shank portion 1()iL (Fig.Y at). At the tips of these branches 19 and on the inner sides 'thereof are opposed annular bosses 20. The peripheries of these bosses 20 bear at their forward and rearward sides'against the upright margins of the forward and rear walls of the opening 13, while the faces of said ybosses bear marginally against the sides of the rack C and teeth 18. interposed between the bosses 2O isa gear 21 meshing at it-s forward side with the teeth 18 on the shank 16 and at its rear side with the teeth This gear 21 is secured with respect to the handle B by means of a key-bolt 22 which reaches axially through the gear 21 and bosses 2O and serves to tie the handle branches 19 against spreading. l/Vith said gear 21 fixed to the handle B and meshing with the teeth 18, 15 on the shanks 16, 10, it will be understood that the tilting of the handle BV on the head A in one direction will result in the opening of the jaws 11, 17 and a reverse tilting movement of said handle will cause said jaws to close. Upon manipulation of the tool, the bosses 20 guide the gear 21 in the opening 153 and together with those portions of the branches 19 next adjacent thereto, rigidly hold the handle B against edgewise and sidewise movement with respect to the head A.

In applying the tool to an object, the user breaks the structure on the axis of the boli' 22 to open or close the jaws ll` 17 and thereby suit the dimensions of the object. Embracing the object, said jaws are grioped thereagainst by swinging the handle B on the head A in a direction to close the aws. Continuing the application of force upon the handle B to further swing the same, the jaws 11, 17 which are caused to grip the object with force in proportion to that applied to the handle, transmits the turning force of said handle to said object, Beversing the swing of the handle B releases the jaws 11, 17 fora new grip.

From the foregoing, the simplicity oi structure, quick acting characteristics of the wrench, and the effectiveness and durability thereof will be readily appreciated.

Changes in the speeilie torni el my invention. :is herein diielosed, may he 'einde Within the scope of what is claimed without departing' it'roni the spirit et in.T invention.V

Hitting described my invention.y What I ehiini :is new and desire te protect by Letters lfntent is:

.1. in :i n'reneln n pair el" heed members, eneh eoinin'ising n she'. end n rightnngnhir inw reaching ornrdly thereol2 the shrink ol one nieniher henne` lorineil with :i wey in the liront edge thireoif :ind nlso 'termed with :in elonggntefl opening;- therethroueh :it the rear thereot, Seid openingpnrfilleling; mid mi' :ind eoininnnienting therewith, the Shania et the eerfend 11i/einher little Fi id Vey in the. sh-init ot the tiretineinher end slid- :ihie thereinq there heine' renrwniidljif projecting); reel; teeth :it the rein edge o seid .shenli` there heine' nel; teeth projeelinn' 'forwardly Atroni the rear Well ot the opening in the shank ot' the iretineinher`r n g'eiir located in eind opening; sind meshing et ite for 1mrd und renr :aides with seid tiret and Second reel; teeth reepeetiveiy, n handle hit'nrented nt` one end thereof. the hzinehee oi? nid handle strznldlinn the shank ot seid lirfst member :ind itoilned with opposed annuler hose-es on the inner Sides thereot` the riins ot seid hosses riding against the outer n'nirgins oi? the 'torinrd und rezir nella of said elongated opening;` und the ninrg'ins ot the i'nees oi Suid hoesee hearing' against the ende` ot the rack teeth on both Shanksa Suid gear heilig fixed to the handle between and in axial nlinenienl; with the l'iosses thereon7 seid handle serving to turn and `juide the geni' and seid genr serving, through eonction with Seid nel: teetln to relatively shift the head members und open and close seid jawn.

ln n. wreneh a pair of heed members, eneh comprisingn ehnni: :ind n right-lingulzir jew .teething 'lorwnrdl \v thereoil. the Shanks ot' seid nieinhers heine; relatively elidable one on the otheix the e'nzinii et one ineinher heini;l tornied with :in elongated opening traversing the sanne und nnrnllelinn' the line ol relative nnn'enient ol s :nid nienilieix-l,r` there being` reel; teeth on the shank, of the Second ineniher, there being reel; teeth on the tiret Ineniher arranged along; the reni.' well of Seid elongated opening sinieed npeirt troni end oiiponing enid recit teeth on thi sea-ond nien'ilier, :il endle hi'lin'ented to ennegly Struddle the tiri-'t1 ineinlier, n rear within snid elongated openingl meshing' :it its opposite Sides with said rech teeth :ind seeiired to seidv handle. there heine` nn annuler hoes :it the inner side ot one ot the lizuieliee ot' seid handle, the rini ot seid hoes ridinnv agninszt. the opposite mille ol. seid opening, seid handle serving to turn nid gen1 :ind Seid eje-nr serving'. through its eonetion with Said rziek teeth uo relatively f-:hi'lt said nieinhers und thereby open end Close the jawn.

In testimony whereof'I` I here signed niy naine to this Specification.

BERNARD LYNN MGNERNEY. 

